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Relevant Properties of Carbon Support Materials in Successful Fe-N-C Synthesis for the Oxygen Reduction Reaction: Study of Carbon Blacks and Biomass-Based Carbons

Hülstede, Julia and Schonvogel, Dana and Schmies, Henrike and Wagner, Peter and Schröter, Frank and Dyck, Alexander and Wark, Michael (2020) Relevant Properties of Carbon Support Materials in Successful Fe-N-C Synthesis for the Oxygen Reduction Reaction: Study of Carbon Blacks and Biomass-Based Carbons. Materials, 14 (1), p. 45. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/ma14010045. ISSN 1996-1944.

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Official URL: https://www.mdpi.com/1996-1944/14/1/45

Abstract

Fe-N-C materials are promising non-precious metal catalysts for the oxygen reductionreaction in fuel cells and batteries. However, during the synthesis of these materials less activeFe-containing nanoparticles are formed in many cases which lead to a decrease in electrochemicalactivity and stability. In this study, we reveal the significant properties of the carbon support requiredfor the successful incorporation of Fe-N-related active sites. The impact of two carbon blacks andtwo activated biomass-based carbons on the Fe-N-C synthesis is investigated and crucial supportproperties are identified. Carbon supports having low portions of amorphous carbon, moderatesurface areas (>800 m2/g) and mesopores result in the successful incorporation of Fe and N onan atomic level and improved oxygen reduction reaction (ORR) activity. A low surface area andespecially amorphous parts of the carbon promote the formation of metallic iron species coveredby a graphitic layer. In contrast, highly microporous systems with amorphous carbon provoke theformation of less active iron carbides and carbon nanotubes. Overall, a phosphoric acid activatedbiomass is revealed as novel and sustainable carbon support for the formation of Fe-Nxsites. Overall,this study provides valuable and significant information for the future development of novel andsustainable carbon supports for Fe-N-C catalysts.

Item URL in elib:https://elib.dlr.de/140021/
Document Type:Article
Title:Relevant Properties of Carbon Support Materials in Successful Fe-N-C Synthesis for the Oxygen Reduction Reaction: Study of Carbon Blacks and Biomass-Based Carbons
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Hülstede, JuliaJulia.Huelstede (at) dlr.dehttps://orcid.org/0000-0001-7822-8425
Schonvogel, DanaDana.Schonvogel (at) dlr.dehttps://orcid.org/0000-0002-2485-740X
Schmies, HenrikeHenrike.Schmies (at) dlr.dehttps://orcid.org/0000-0002-6565-1280
Wagner, Peterp.wagner (at) dlr.dehttps://orcid.org/0000-0002-5644-9881
Schröter, FrankCarl von Ossietzky Universityhttps://orcid.org/0000-0002-8367-6684
Dyck, Alexanderalexander.dyck (at) dlr.dehttps://orcid.org/0000-0002-5010-8226
Wark, MichaelCarl von Ossietzky Universityhttps://orcid.org/0000-0002-8725-0103
Date:24 December 2020
Journal or Publication Title:Materials
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:14
DOI :10.3390/ma14010045
Page Range:p. 45
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:1996-1944
Status:Published
Keywords:nonprecious metal catalysts; Fe-N-C materials; activated biomass; porous carbon; carbonsupport; oxygen reduction reaction
HGF - Research field:Energy
HGF - Program:Technology, Innovation and Society
HGF - Program Themes:Renewable Energy and Material Resources for Sustainable Futures - Integrating at Different Scales
DLR - Research area:Energy
DLR - Program:E SY - Energy Systems Analysis
DLR - Research theme (Project):E - Energy Systems Technology (old)
Location: Oldenburg
Institutes and Institutions:Institute of Networked Energy Systems > Fuel Cells
Deposited By: Hülstede, Julia
Deposited On:04 Jan 2021 15:07
Last Modified:04 Jan 2021 15:07

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